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# -*- coding: utf-8 -*-
##############################################################################
#
# Author: Laurent Mignon
# Copyright 2014 'ACSONE SA/NV'
#
# This program is free software: you can redistribute it and/or modify
# it under the terms of the GNU Affero General Public License as
# published by the Free Software Foundation, either version 3 of the
# License, or (at your option) any later version.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU Affero General Public License for more details.
#
# You should have received a copy of the GNU Affero General Public License
# along with this program. If not, see <http://www.gnu.org/licenses/>.
#
##############################################################################
from openerp import SUPERUSER_ID
from openerp.addons.web import http
from openerp.addons.web.controllers import main
from openerp.modules.registry import RegistryManager
from .. import utils
import random
import logging
import openerp.tools.config as config
_logger = logging.getLogger(__name__)
class Session(main.Session):
_cp_path = "/web/session"
_REQUIRED_ATTRIBUTES = ['HTTP_REMOTE_USER']
_OPTIONAL_ATTRIBUTES = []
def _get_db(self, db):
if db is not None and len(db) > 0:
return db
db = config['db_name']
if db is None or len(db) == 0:
_logger.error("No db found for SSO. Specify one in the URL using parameter "
"db=? or provide a default one in the configuration")
raise http.AuthenticationError()
def _get_user_id_from_attributes(self, res_users, cr, attrs):
login = attrs.get('HTTP_REMOTE_USER', None)
user_ids = res_users.search(cr, SUPERUSER_ID, [('login', '=', login), ('active', '=', True)])
assert len(user_ids) < 2
if user_ids:
return user_ids[0]
return None
def _get_attributes_form_header(self, req):
attrs = {}
all_attrs = self._REQUIRED_ATTRIBUTES + self._OPTIONAL_ATTRIBUTES
headers = req.httprequest.headers.environ
for attr in all_attrs:
value = headers.get(attr, None)
if value is not None:
attrs[attr] = value
attrs_found = set(attrs.keys())
attrs_missing = set(all_attrs) - attrs_found
if len(attrs_found) > 0:
_logger.debug("Fields '%s' not found in http headers\n %s", attrs_missing, headers)
missings = set(self._REQUIRED_ATTRIBUTES) - attrs_found
if len(missings) > 0:
_logger.error("Required fields '%s' not found in http headers\n %s", missings, headers)
return attrs
def _bind_http_remote_user(self, req, db_name):
db_name = self._get_db(db_name)
try:
registry = RegistryManager.get(db_name)
with registry.cursor() as cr:
modules = registry.get('ir.module.module')
installed = modules.search_count(cr, SUPERUSER_ID, ['&',
('name', '=', 'auth_from_http_remote_user'),
('state', '=', 'installed')]) == 1
if not installed:
return
config = registry.get('auth_from_http_remote_user.config.settings')
# get parameters for SSO
default_login_page_disabled = config.is_default_login_page_disabled(cr, SUPERUSER_ID, None)
# get the user
res_users = registry.get('res.users')
attrs = self._get_attributes_form_header(req)
user_id = self._get_user_id_from_attributes(res_users, cr, attrs)
if user_id is None:
if default_login_page_disabled:
raise http.AuthenticationError()
return
# generate a specific key for authentication
key = randomString(utils.KEY_LENGTH, '0123456789abcdef')
res_users.write(cr, SUPERUSER_ID, [user_id], {'sso_key': key})
login = res_users.browse(cr, SUPERUSER_ID, user_id).login
req.session.bind(db_name, user_id, login, key)
except http.AuthenticationError, e:
raise e
except Exception, e:
_logger.error("Error binding Http Remote User session", exc_info=True)
raise e
@http.jsonrequest
def get_http_remote_user_session_info(self, req, db):
if not req.session._login:
self._bind_http_remote_user(req, db)
return self.session_info(req)
randrange = random.SystemRandom().randrange
def randomString(length, chrs):
"""Produce a string of length random bytes, chosen from chrs."""
n = len(chrs)
return ''.join([chrs[randrange(n)] for _ in xrange(length)])